Oil gauge



a. cAsPAlN oct. zo, 192s.

OIL GAUGE Original Filed March 18. 1924l Inventor Attorney ajaz' 'agoazaIlllllnll Patented Get.. 2lb, i925.

i;.iiiitra',I stares earner Prieny OIL GAUGE.

Application led Iflfarch i8, i924, Serial No. 760,132. Renewed September2, 1925.

To fr?? whom @'25 fnmg/ cof/wcm enada, have invented certain new anduse- Alul lniprovei ents in Uil Gauges; and l do hereby declare that thetolloiving 1s a tull,

clearpand Greet description ot the i vention, such as will enable othersskilled in the art to which it appertains to niake and use the saine.

rhe present invention pertains to novel oil gauge ile-:muet particularlyto indicatie the ainoiuit o'f oil contained within the cranl-r case oi:in automobile. p

The principal object oli the invention is the Vprovision ot a device otthis character in hiding a tloat the weight ot iviiichis automaticallydecreased 'for lower liquid levels.

The invention comprises a reservoir having tubular connection with thecrank oase oi an automobile and an indicator casing, there being a tubeextending ,trein the reservoir to the casing.` disposed in the casingcarries an indicating ineinber, While on the other end olf the tubeis'inountcd u stein which also entends into the reservoir. rEhe lowerend of the stein has Vfixed thereto a float upon which is placed asecond float loosely surrounding the stein. This second 'float isadapted to be supported solely y the reservoir alter a predeterminedlevel in the reservoir has been passed in the decrease ot the supply oitoil. The second float thus passes out ot operation, whereby a lighterand more sensitive float is provided for the lower liquid levels.Obviously, the indicating device is graduated in accordance with thechange in weight ol. the floatand the volume of the reservoir.

The invention is fully disclosed in the tollowing description and in theaccompanying drawings in which:

Figure l is an elevation ot the device partly in section; f

Figure 2 is aV sectional view thereof at right angles to Figure l;

Figure 3 is a sectional view through the reservoir, the float being in arelatively low position;

Figure t is a section on the line 4 4 ot .Figure 2; and,

The portion ot the tribe plings 3, et and 5 disposed at differentlevels.

`To the dashboard G is secured an indicator traine comprising a housing7 having a scaled plate 8 provided therein. The front side of the casingis open and is covered by a glass plate 9 held in place by `a traine l0.The scaled plate is formed with a longitudinal slot li having anenlarged upper end 1:?, the purpose oi which is pointed out below. Theback ot the easing 7 has a groove i3 in which is received one leg le ola curved clamp, the remaining end l5 engaging the 'back ot thedashboard. The two arins are held in engagement withtlie dashboard .bymeans et a thumb screw 'lli threaded throu-"fh the member 1,5 and bearning against the back ot the board.

An apertured inen'iber 17 is passed through the top of the reservoir andsecured thereto by ineaus ot a collar le screwed ou the lower endthereot and bearing against the lower tace ot the reservoir cover. Uponthe member l? is placed an internally threaded nipple 19 which is heldagainst the bolt 1'? by means of an internally threaded ring` 20surrounding both ineinbers. Into the nipple 19 is threaded the lower endot a tube 21? the upper end thereof extending longitudinally through thecasing 7, as shown in Figures 2, l and 5. The portion of the tube withinthe casing has a longi tudinal slot 22, the upper end thereof beingenlarged as at 23 for a purpose pointed out below. llt will be seen roinFigure l that the tube engages the scaled plate 85 the slots of boththese members being in registration. Through the top of the casing 7isxpassed a screw 2l entering the upper extremity oit the tube andsubstantially covering the enlarged portion :9.53.

ln the upper end 'ot the tube is disposed an indicator comprising acylinder 25 and neel; 2G extending therefrom tl'irough the Vthe stem,the remaining portion F31 ot' the cylinder beingdisposed above thesection 30 and penetrated by the stem so as to be slidable with relationthereto as clearly7 shown in Figures l and 2. The inner walls of thereservoir carry lbrackets 32 adapted for engagement by lugs 33 providedon the periphery oic the member 3l.

The members 30 andy 31 are hollow and water-tight and function togetheras a float when the liquid level is above the brackets 32, as may beclearly seen from Figure l.

In this condition the indicator 2'? is disposed at the upper end of thescaled plate.

When the liquid level descends. the lugs 33 engage the brackets 32 andthe portion 3l is thus supported above the liquid level as shown inFigure 3. The section 3l descends, however, since the stem 28 is adaptedto slide through the portion 31. By reason ot this construction, alighter, and hence more sensitive float is provided tor lower liquidlevels.

`When the lower float member 30 comes into operation alone for lowerliquid levels and the portion 3l is supported on the bracket 32, thelugs 33 are directly in contact with the inclined sides of the reservoir2 as shown in Figure 3. Moreover, the straight sides oi the portion 3lare very slightly spaced from the straight walls ci" the reservoir asillustrated in Figure 2. The upper float member 81 is thereforeprevented 'from moving about due to swashing of the liquid. Since thestem 28 supporting the lower part 30 passes through the upper portion 3land fits rather closely therein, the lower portion is also preventedfrom ymoving about. The scaled plate 8 is obviously graduated withrespect to the change in weight of the float and the volume of the tank.The side Sli indicates Vthe amount of oil removed from the tank, whilethe side M.L. indicates the number ofumiles which the automobile maytravel with the amount of oil contained in the reservoir.

It will be. seen from Figure 2 that the screw 24 serves to hold the tube21 in` engagement with the top of the casing and at the same time coversthe enlarged slot ends 12 and 23. When it is desired to remove ventionhas Abeen illustrated and described,

yit is to be understood that various alterations in the details otconstruction may be made without departing from the spirit ottheinvention as indicated by the appended claims.

Having thus fully described the invention, what I claim as new `anddesire Vto protect by Letters Patent is l. An oil gauge comprising` areservoir and an indicator, a stem slidably mounted in said reservoir,float section secured to said stem, a second tloat section surrounding'said stem and 'disposed above the first section, lugs extending fromsaid second section, stop members carried by said reservoir and adaptedfor engagement by said lugs, and an operative 'connection between saidstem and indicator.

2. An oil gauge comprising a reservoir, a stem slidably mounted in saidreservoir, a float section secured to said stem, a second -float sectionsurrounding said stem and disposed above the first section. lugs tendingfrom sai d second section, vstop inemb-ers carried by said reservoir andadapted for engagement by said lugs, al tube having one end secured tothe reservoir and receiving said stem. a casing` receiving the remaining end oi said tube, lau indicator mounted in the remaining end,and an operative connectionA between the stem and the indicator.

3. An oil gauge comprising a reservoir, a stem slidably mounted in saidreservoir, a float section secured to saidstem, a second float sectionsurrounding said stem and disposed above the first section, lugs eX-tending from said s'econd'section, stop menibers carried by 'saidreservoir vand adapt-ed for engagement by said lugs, a tube having oneend secured to the reservoir and receiving said stein, a casingreceiving the re inaining end of said tube, an indicator mounted in theremaining end. and a plurality of balls disposed within said tubebetween the stem and the indicator. i K

In witness whereof I have hereunto set my hand.

Basins oi-isrAiN.

